Surface Area
... (e) relate cell size to cell surface area to volume ratio, in relation to the exchange of materials with the environment; – The smaller a cell, the larger its surface area to volume ratio. – Cells need to be microscopic in size to maximise the surface area to volume ratio – A large surface area to ...
... (e) relate cell size to cell surface area to volume ratio, in relation to the exchange of materials with the environment; – The smaller a cell, the larger its surface area to volume ratio. – Cells need to be microscopic in size to maximise the surface area to volume ratio – A large surface area to ...
Cells and Their Environment - Coach Blair`s Biology Website
... called the lipid bilayer Hydrophobic molecules pass easily; ...
... called the lipid bilayer Hydrophobic molecules pass easily; ...
APOPTOSIS: An overview
... Apoptosis by conflicting signals that scramble the normal status of cell ...
... Apoptosis by conflicting signals that scramble the normal status of cell ...
APOPTOSIS: An overview
... Apoptosis by conflicting signals that scramble the normal status of cell ...
... Apoptosis by conflicting signals that scramble the normal status of cell ...
BLOOD and BONE MARROW
... iii) NO nucleus, NO cellular organelles iv) contains hemoglobin (carries O2 and CO2) b) leukocytes (WBCs) i) all contain azurophilic granules! ii) granulocytes: neutrophils, eosinophils, basophils iii) agranulocytes: lymphocytes (T/B/plasma cells), monocytes c) platelets i) come from megakaryocytes ...
... iii) NO nucleus, NO cellular organelles iv) contains hemoglobin (carries O2 and CO2) b) leukocytes (WBCs) i) all contain azurophilic granules! ii) granulocytes: neutrophils, eosinophils, basophils iii) agranulocytes: lymphocytes (T/B/plasma cells), monocytes c) platelets i) come from megakaryocytes ...
Transfection - WordPress.com
... inert solid, which is then shot directly into the target cell’s nucleus ...
... inert solid, which is then shot directly into the target cell’s nucleus ...
VascDev
... One autosomal dominant FEVR gene identified by Robaitaille et al [Nature Genetics 32: 326-330 (2002)] encodes Frizzled4, a putative Wnt receptor. A second autosomal dominant FEVR locus encodes the Wnt co-receptor Lrp5 [Toomes et al [IOVS 45: 20832090 (2004)]; Jiao et al [Am J Hum Genet 75: 878-884 ( ...
... One autosomal dominant FEVR gene identified by Robaitaille et al [Nature Genetics 32: 326-330 (2002)] encodes Frizzled4, a putative Wnt receptor. A second autosomal dominant FEVR locus encodes the Wnt co-receptor Lrp5 [Toomes et al [IOVS 45: 20832090 (2004)]; Jiao et al [Am J Hum Genet 75: 878-884 ( ...
Chapter 8: Cellular Transport and the Cell Cycle
... organelle: the membranebound structures within eukaryotic cells (p. 173) ...
... organelle: the membranebound structures within eukaryotic cells (p. 173) ...
A DNA damage checkpoint pathway coordinates the
... al. 2005) and hydroxyurea (HU), which inhibits ribonucleotide reductase and therefore affects replication by depletion of dNTPs (KOC et al. 2004). Therefore, the sensitivity of the selected silenced clones against these genotoxic agents was tested. Strains were grown on rich media supplemented with ...
... al. 2005) and hydroxyurea (HU), which inhibits ribonucleotide reductase and therefore affects replication by depletion of dNTPs (KOC et al. 2004). Therefore, the sensitivity of the selected silenced clones against these genotoxic agents was tested. Strains were grown on rich media supplemented with ...
Chapter 8: Cellular Transport and the Cell Cycle
... cell’s surface area-to-volume ratio. As a cell’s size increases, its volume increases much faster than its surface area. Picture a cube-shaped cell like those shown in Figure 8.9. The smallest cell has 1 mm sides, a surface area of 6 mm2, and a volume of 1 mm3. If the side of the cell is doubled to ...
... cell’s surface area-to-volume ratio. As a cell’s size increases, its volume increases much faster than its surface area. Picture a cube-shaped cell like those shown in Figure 8.9. The smallest cell has 1 mm sides, a surface area of 6 mm2, and a volume of 1 mm3. If the side of the cell is doubled to ...
Bacteria Challenge #2
... • Directions: After each question, write your answer on a separate sheet of paper. You will be given about 30 seconds per questions. The group with the most correct answers will win. ...
... • Directions: After each question, write your answer on a separate sheet of paper. You will be given about 30 seconds per questions. The group with the most correct answers will win. ...
Cell Membrane notes Kelly
... Movement of water into a cell can put pressure on plasma membrane Animal cells will expand and may burst o Some cells, such as Paramecium have organelles called contractile vacuoles which are basically little pumps which pump excess water out of cell o You can alter the rate of contractile vacuole p ...
... Movement of water into a cell can put pressure on plasma membrane Animal cells will expand and may burst o Some cells, such as Paramecium have organelles called contractile vacuoles which are basically little pumps which pump excess water out of cell o You can alter the rate of contractile vacuole p ...
Honors Biology Name Cells Notes, continued… PROKARYOTIC
... Notice that all of these proteins are produced on ribosomes that are attached to the ER. This is because they need to be inside a vesicle, or part of a vesicle membrane at some point in their production. Proteins that are produced on free ribosomes are usually proteins that are needed within the cyt ...
... Notice that all of these proteins are produced on ribosomes that are attached to the ER. This is because they need to be inside a vesicle, or part of a vesicle membrane at some point in their production. Proteins that are produced on free ribosomes are usually proteins that are needed within the cyt ...
Notes- Nerve Impulses and Junctions
... FACT 1: Lentils represent sodium ions. There are more sodium ions outside the nerve cell than inside, so there are more pintos in the “outside” pan. Lima beans represent potassium ions, pinto beans represent chloride ions, and the wads of construction paper represent proteins. In a real cell, there ...
... FACT 1: Lentils represent sodium ions. There are more sodium ions outside the nerve cell than inside, so there are more pintos in the “outside” pan. Lima beans represent potassium ions, pinto beans represent chloride ions, and the wads of construction paper represent proteins. In a real cell, there ...
PDF
... cells. Very few membranes of granular endoplasmic reticulum occur in the early stages but these increase markedly in number from stage 32 onwards. Vesicles of smooth endoplasmic reticulum are quite numerous although Golgi complexes were only occasionally observed. In contrast, Golgi membranes are we ...
... cells. Very few membranes of granular endoplasmic reticulum occur in the early stages but these increase markedly in number from stage 32 onwards. Vesicles of smooth endoplasmic reticulum are quite numerous although Golgi complexes were only occasionally observed. In contrast, Golgi membranes are we ...
Slime Molds
... All protozoa digest their food in stomachlike compartments called vacuoles. As they chow down, they
make and give off nitrogen, which is an
element that plants and other higher
creatures can use.
Protozoa move in one of 3 ways:
pseudopods, cilia, flagella.
...
... All protozoa digest their food in stomachlike compartments called vacuoles
Cell Cycle, Mitosis and Cytokinesis
... progression of the cell cycle in G1 (by blocking the activity of CDK2). • If both copies (as mutations in p53 are recessive) of the p53 gene is mutated the above mechanism fails • The p53 protein is also a key player in apoptosis, forcing "bad" cells to commit suicide. ...
... progression of the cell cycle in G1 (by blocking the activity of CDK2). • If both copies (as mutations in p53 are recessive) of the p53 gene is mutated the above mechanism fails • The p53 protein is also a key player in apoptosis, forcing "bad" cells to commit suicide. ...
Cell Division Practice Test
... C is incorrect because DNA cannot replicate in the middle of meiosis. D is correct because chromatids remain together during meiosis I and separate during meiosis II. ...
... C is incorrect because DNA cannot replicate in the middle of meiosis. D is correct because chromatids remain together during meiosis I and separate during meiosis II. ...
Diffusion & Osmosis
... In the case with diffusion, particles high are moving from an area of _____ low concentration to an area of _____ concentration; therefore, the substance is said to move ______ with the concentration gradient. ...
... In the case with diffusion, particles high are moving from an area of _____ low concentration to an area of _____ concentration; therefore, the substance is said to move ______ with the concentration gradient. ...
CHAPTER 7: CELL STRUCTURE AND FUNCTION
... 3. Define Prokaryote and Eukaryote, what are the example organisms that are associated with each type (p. 173)? ...
... 3. Define Prokaryote and Eukaryote, what are the example organisms that are associated with each type (p. 173)? ...
Mitosis
Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In general, mitosis (division of the nucleus) is often followed by cytokinesis, which divides the cytoplasm, organelles and cell membrane into two new cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell.The process of mitosis is divided into stages corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The cell may then divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication). Other errors during mitosis can induce apoptosis (programmed cell death) or cause mutations. Certain types of cancer can arise from such mutations.Mitosis occurs only in eukaryotic cells and the process varies in different organisms. For example, animals undergo an ""open"" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi undergo a ""closed"" mitosis, where chromosomes divide within an intact cell nucleus. Furthermore, most animal cells undergo a shape change, known as mitotic cell rounding, to adopt a near spherical morphology at the start of mitosis. Prokaryotic cells, which lack a nucleus, divide by a different process called binary fission.